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US 12,306,018 B1Granted
Material testing apparatus having vibration mitigation
OwnerKent Vilendrerinventor
Life of this patent
Estimating the term…
Abstract
A material testing apparatus of the present invention may be used as a stand-alone tester coupled to a single environmental chamber. Alternatively, a plurality of material testing apparatus of the present invention may be coupled to a common frame to form a multi-station material testing system. The material testing apparatus of the present invention includes a linear actuator that provides a repetitive linear load or displacement on an object or specimen while canceling vibrations caused by actuation of the linear actuator.
Claims24
A material testing apparatus having vibration mitigation, the apparatus comprising:
- a support framework;
- a stator coupled to the support framework;
- a first armature having a cross-flexure assembly, arms, and a first set of permanent magnets, wherein a first end of the arms of the first armature are coupled to the cross-flexure assembly of the first armature and a free end of the arms of the first armature have the first set of permanent magnets affixed thereto, wherein a portion of the cross-flexure assembly of the first armature is fixed to the support framework and another portion of the cross-flexure assembly of the first armature is mounted to the arms of the first armature to allow the first armature to pivot;
- a second armature having a cross-flexure assembly, arms, and a second set of permanent magnets, wherein a first end of the arms of the second armature are coupled to the cross-flexure assembly of the second armature and a free end of the arms of the second armature have the second set of permanent magnets affixed thereto, wherein a portion of the cross-flexure assembly of the second armature is fixed to the support framework and another portion of the cross-flexure assembly of the second armature is mounted to the arms of the second armature to allow the second armature to pivot;
- an interconnection flexure connecting the cross-flexure assembly of the first armature with the cross-flexure assembly of the second armature;
- a linear displacement assembly;
- a displacement flexure coupling the second armature to the linear displacement assembly;
- and
- a displaceable base coupled to the support framework below the linear displacement assembly.
6 more elements
A material testing apparatus having vibration mitigation, the apparatus comprising:
- a support framework;
- a stator coupled to the support framework, wherein the stator includes first and second spaced apart c-shaped cores oriented such that ends of the first and second c-shaped cores are aligned but opposed to form a first gap and a second gap between opposing ends of the first and second c-shaped cores, and further wherein each end of each of the first and second c-shaped cores includes a coil surrounding an end portion of each end;
- a first armature having a cross-flexure assembly, arms, and a first set of permanent magnets, wherein a first end of the arms of the first armature are coupled to the cross-flexure assembly of the first armature and a free end of the arms of the first armature have the first set of permanent magnets affixed thereto, wherein a portion of the cross-flexure assembly of the first armature is fixed to the support framework and another portion of the cross-flexure assembly of the first armature is mounted to the arms of the first armature to allow the first armature to pivot;
- a second armature having a cross-flexure assembly, arms, and a second set of permanent magnets, wherein a first end of the arms of the second armature are coupled to the cross-flexure assembly of the second armature and a free end of the arms of the second armature have the second set of permanent magnets affixed thereto, wherein a portion of the cross-flexure assembly of the second armature is fixed to the support framework and another portion of the cross-flexure assembly of the second armature is mounted to the arms of the second armature to allow the second armature to pivot;
- an interconnection flexure connecting the cross-flexure assembly of the first armature with the cross-flexure assembly of the second armature;
- a linear displacement assembly;
- a displacement flexure coupling the second armature to the linear displacement assembly;
- a displaceable base mount coupled to the support framework below the linear displacement assembly;
- and
- wherein the first set of permanent magnets are positioned within the first gap of the stator and the second set of permanent magnets are positioned in the second gap of the stator.
7 more elements
Dependencies are inferred from the claim text.